公开(公告)号：US20190319611A1

公开(公告)日：2019-10-17

申请号：US16469621

申请日：2017-11-30

Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Jae Yoon SIM ,  Ja Hyun KOO

IPC: H03K3/0231 ,  H03K4/501 ,  H03K4/52 ,  H03K3/011

Abstract: The present invention relates to a technology capable of compensating for a frequency error in a quadrature relaxation oscillator. The quadrature relaxation oscillator generates a signal at a desired frequency by using a resistor and a capacitor which are less insensitive to a PVT (Process, Voltage, Temperature) variation, generates a signal at a desired frequency by compensating for an error from design, which is caused by a mismatch between circuits due to a characteristic of a semiconductor process, through a feedback lop, and removes noise.